Table 2.
Unadjusted and adjusted hazard ratios for women lost to follow up in the study.
| Characteristic | Total number of women (n) | Number (%) lost to follow up | Hazard Ratios (95% CI)a | Adjusted Hazard Ratios b (95% CI) |
|---|---|---|---|---|
| Clinic type | ||||
| GPc | 738 | 140 (19.0) | 1 | 1 |
| SHSd | 378 | 99 (26.2) | 1.5 (0.9, 2.4) | 1.6 (1.0, 2.7) |
| Clinic location | ||||
| Rural | 455 | 88 (19.3) | 1 | 1 |
| Metro | 661 | 151 (22.8) | 1.2 (0.7, 2.2) | 1.4 (0.8, 2.4) |
| Age group | ||||
| < 21 years old | 452 | 100 (22.1) | 1 | 1 |
| > 20 years old | 664 | 139 (20.9) | 0.9 (0.6,1.3) | 1.0 (0.7, 1.3) |
| Education level achieved | ||||
| Up to year 12 | 609 | 140 (23.0) | 1 | 1 |
| Tertiary | 477 | 85 (17.8) | 0.7 (0.5, 1.0) | 0.7 (0.5, 1.0) |
| Employment status | ||||
| Unemployed/Not working | 418 | 81 (19.4) | 1 | 1 |
| Employed | 668 | 143 (21.4) | 1.1 (0.8, 1.5) | 1.1 (0.9, 1.5) |
| Tested positive for chlamydia prior to study | ||||
| No | 965 | 202 (20.9) | 1 | 1 |
| Yes | 114 | 20 (17.5) | 0.8 (0.6, 1.0) | 0.8 (0.5, 1.0) |
| Number of new sexual partners during the studye | ||||
| 0 - 2 partners | 706 | 173 (24.5) | 1 | 1 |
| > 2 partners | 410 | 66 (16.1) | 0.8 (0.6, 1.0) | 0.8 (0.5, 1.2) |
a 95% confidence interval.
bAdjusted Hazard Ratios = adjusted for type of clinic recruited from, location of recruitment site, age, education level reached, employment status, numbers of new sexual partners at each stage, if tested positive prior to the study.
c General practice clinic.
d Sexual health service/Family Planning clinic.
e Cumulative number of new partners throughout the study.